If you want an easy to build 3D kit aircraft... try the Sig Somethin' Extra. Its got a "fatter" airfoil and proportionately larger control surfaces than the 4*40. Uses the same engine.

The 4*40 is intended as an aerobatic trainer or transition model from the high wing "classic" trainer designs. It is capable of being used as a first airplane with the use of Buddy-Box instruction. (It is a trainer. It comes with Sig's beginner's guide that assumes you NEVER flew one before.)